| 摘要 |
<p>The present invention relates to a process for the production of plane-parallel platelets, comprising the steps: a) deposition of a separating agent I, which is dissolvable in water, onto a carrier to produce a separating agent layer, b) vapour-deposition of a separating agent II, which is not dissolvable in water, onto the separating agent layer of step a), c) vapour-deposition of at least one product layer onto the separating agent layer of step b), d) vapour-deposition of a separating agent II, which is not dissolvable in water, onto the product layer of step c), e) dissolution of the separating agent layer of step a) in water and production of a suspension in which the at least one product layer is present in the form of plane-parallel platelets, the top surface and the bottom surface, but not the side surfaces of which are covered by the separating agent II, and f) dissolution of the separating agent layer of steps b) and d) in a solvent and production of a suspension in which the product, comprising at least one layer, is present in the form of plane-parallel platelets.</p> |
